NEOM Project.•Inspection and verification for the design implementation by contractor at site.•Attended several technical forums for the tunneling works as a design representative and provide technical advice on the subject matters related to NATM tunneling in accordance with design drawings. •Follow up on the contractor’s progress achievement against the baseline programmed.•Supervision of the implemented design support and the quality of work to fulfill the design requirements. •Review of construction records provided by the Contractor, including blast records, geological face mapping, 3D Logging and L-section of tunnel, probe drilling records, ground monitoring, water inflow and grouting information.•Undertake the review of technical submittals including temporary works designs (e.g. drill and blast, tunnel ventilation, tunnel drainage designs), material acceptance requests (MARs), requests for information (RFIs), non-conformance reports (NCRs), field change design (FCD) proposals, shop drawings and as-built design information.•Review and technical approval of the Contractor’s submission for slope support treatment, installation of slope support/stabilization measures, grouting of rock dowels and rock bolts, installation of relief drains wherever required, tunnel excavation rock mass classification and temporary support proposals, post excavation grouting, ground improvement grouting in exceptionally poor ground.•Review and technical approval of the Contractor’s survey and monitoring records.•Review and validation of conducted face-mapping to verify rock support and grouting requirements

Kanpur Metro*To ensure precise execution of all tasks in accordance with the approved Method Statement, technical specifications, and design drawings for TBM tunneling activities.•Reviews the selection position of the segment key.•Accountable for overseeing daily operations of tunneling activities.•Continuously monitor segmental ring building and TBM orientation throughout tunnel advancement.•Coordinate all activities between the tunnel face and the surface, including communication with the surface supervisor and supervisor of the grouting plant.•Prepares comprehensive records of tunnel advancement and grouting activities.•Manage resource handling and reconciliation, ensuring efficient material utilization.•Supervise activities at the TBM launching shaft, including core-cutting, TBM lowering, and assembly for the initial drive.•Review ring and TBM survey reports in collaboration with the Chief Surveyor to ensure accurate TBM direction.•Prepare Method Statements and reviewing Drawings for tunneling works.•Supervise the assembly and commissioning of the TBM.•Execution of the cross-passage construction between two TBM tunnels using the NATM method.•Addressing non-conformance reports and ensuring compliance.

Pune Metro•Preparing geological profiles from subsurface geo-scientific data, preparation of geological sections. •Interpretation geotechnical monitoring instruments, and compiling technical notes, reports, and geological interpretations.•Interfaces with both in-house and project teams, reviews factual and geotechnical interpretative reports, and conducts bore-well surveys along tunnel alignments, proposing alternate locations as needed.•Preparing rock excavation sequence, including the rock supports to be provided as per the rock class being encountered during the excavation of bottom-up station.•Execution of the geotechnical/soil investigation works of the project within the set targets.•Supervise the Piling Activity.•Assists Junior Field Engineers with technical problems to facilitate appropriate solutions. •Excavation of the underground bottom-up station with optimum utilization of resources and manpower.•Execution and review the design of NATM tunnel, drill hole patterns, as part of the cross over by conducting control blasts as the road which lies above the tunnels are very highly congested with traffic.•Execution of cross passages between two TBM tunnels by NATM.•Performing 3-dimensional logging and implementing rock support according to design drawings, and at times providing extra rock support of NATM tunnels as required.•Optimizing manpower, material utilization, and resource management to effectively control costs.•Facilitate on-site classroom sessions to enhance understanding of ongoing site activities.•Executing the day-to-day activities with proper planning and set target.•Monitoring daily activities closely to ensure efficient progress and adherence to schedules.

Oil Storage Cavern Project, Fujairah UAE•Conduct face mapping and prepare 3D logging and longitudinal sections of the tunnels.•Determine rock classes for excavation and support systems, calculate Rock Mass Rating (RMR) and Rock Mass Quality (Q) values.•Conduct Slope mapping & slope stabilization, shaft mapping.•Perform probe hole drilling, interpret results, and determine round length and excavation method.•Conduct horizontal core drilling along the tunnel axis, log cores, interpret findings to identify weak zones, and propose pre-treatment measures.•Develop grouting plans and recommendations for tunnel stability.•Preparation of geological reports, projection of geological structures, data collection and processing, monitoring of geotechnical instruments, and conducting hydrogeological tests such as water injection and monitoring water inflow.

•Thoroughly review civil and geological drawings to guide daily tunnel support execution and collaborate with clients and DDC personnel to propose support modifications.•Supervision and monitoring of the support and excavation activities on-site according to approved drawings and specifications.•Collaborate with clients and designers to finalize excavation and support methodologies in challenging rock conditions.•Engage with the Contract department to discuss deviations in support installation methodologies or formulate geological claims.•Liaise and present to the client for establishing and obtaining approval for geological claims.•Perform face mapping, 3D logging, and preparation of longitudinal sections along the tunnel axis. Determine rock classes and devise excavation and support systems accordingly.•Classify rock mass using Q, RMR, and GSI systems. Document and compile geological reports. Recommend additional support and obtain client approval.•Conduct probe hole drilling and interpret results to determine round length, excavation method, and recommend additional support as needed.•Develop grouting plans and recommendations to enhance tunnel stability.•Implement face stabilization measures in adverse geological conditions.•Interpret deformation data from 3D and GT monitoring instruments and recommend or incorporate additional or alternative support in deformation zones.•Identify and monitor instabilities such as slabbing and squeezing in the tunnel.•Conduct geological mapping of slopes and implement stabilization measures. Ensure slope stability along approach roads to portals, facility areas, and adjoining quarry.•Implement strategies to minimize over break in tunnels, including specific instructions on drilling patterns, hole count, and powder factor tailored to varying rock conditions for each blast.•Experienced in diverse ground conditions within the highly tectonically active Himalayan zone.

•Monitor data from instruments installed in the tunnel and on the ground surface.•Conduct measurements of groundwater inflow.•Monitor vibrations during blasting and mechanical breaking operations.•Perform face mapping, 3D logging, and prepare longitudinal sections along the tunnel axis. Determine rock classes using Q, RMR, and GSI systems.•Conduct probe hole drilling and interpret results to determine round length.•Compile and document geological reports.•NATM tunneling beneath the water table in a highly urbanized area with intense seepage.•Collaborate with clients and designers to finalize excavation and support methodologies.•Ensure all work activities meet project requirements as specified in the project plan.

•Conduct face mapping, 3D logging, and prepare longitudinal sections along the tunnel axis. Evaluate Rock Mass Rating (RMR), Rock Mass Quality (Q), and Geological Strength Index (GSI) to determine rock classes and recommend excavation and support systems.•Perform probe hole drilling, interpret results to identify weak zones, and recommend pre-treatment measures.•Responsible for preparing geological reports, obtaining approval for Ground Support Design (GOB), and coordinating with clients.•Implementing additional support measures based on site geological conditions, optimizing explosive use to minimize over break and ensure optimum production, and monitoring data from instruments installed in the tunnel.•Frequent communication with site engineers regarding site geological conditions and recommended preventive measures.